U.S. National Archives (Record Group 104, Entry 104, Die Shipments from Philadelphia) Pubblico Deposited
National Archives description:
REGISTER OF DIES FOR THE PHILADELPHIA MINT AND BRANCH MINTS. 1839-54. 1 vol. 1 in. Shown are the number of dies on hand, the number reserved for the next year, the number destroyed, and the number remitted. The entries are arranged by the location of the mint and thereunder chronologically.
National Archive catalog reference is https://catalog.archives.gov/id/585788. See also the National Archives & Records Administration numismatic finding aids at https://nnp.wustl.edu/library/archivedetail/538870.